+++++MGP-D50A
Northstar Polymers, LLC
3444 Dight Avenue So.
Minneapolis, MN 55406
Tel: 612.721.2911
Fax: 612.721.1009
E-Mail:
Northstar Polymers, LLC is a member of Polyurethane Manufacturers Association.
Copy right reserved by Northstar Polymers, LLC 2000 - 2007. Northstar Polymer prohibits duplication of the contents of this web site for the purposes of public display and/or using on another web site without a written authorization by Northstar Polymers, LLC.
MGP-D50A
Data Sheet
This high performance polyether system is one of a family of polymer systems developed by Northstar Polymers designed to provide abrasion resistance, hydrolytic resistance, as well as some degree of structural rigidity. Urethane elastomers molded with this system exhibit fine resolution of mold details, good performance in wet environments and good resistance to ultraviolet light. This combination of features makes elastomers molded from MGP-D50A perfect for applications including patterns designed to transfer an image to wet surfaces including concrete and many custom applications. MGP-D50A also is appropriate for use in mining parts such as a filter sectors and bridge rings, as well as for use in load bearing parts such as wheels.
Typical Physical Properties
Physical Property
ASTM #
Typical Value
Durometer Hardness:
D 2240
Shore D 50
Modulus (psi):
100% Elongation:
D 412
2000
Tensile Strength (psi):
D 412
4100
Ultimate Elongation (%):
D 412
250
Tear Resistance (pli)
Die C:
D 624
610.0
Split:
D 624
225.0
Taber Abrasion (mg loss):
D 4060
90.0
Bashore Rebound (%):
D 2632
30
Typical Processing Conditions
Prepolymer:
MGA-036
Curing Agent:
BNA-005
Catalyst Type:
Amine
Catalyst Level:
Included
Prepolymer Temperature (ºF):
180 - 200
Curing Agent Temperature (ºF):
77
Mold Temperature (ºF):
180 -200
Pot Life*(minutes):
2.5 - 3.0
De-mold Time*** 200 °F (minutes):
25 - 35
Complete Cure Cycle*** 180 °F (hours):
16
* Defined as: a 300 gram sample is too thick to pour.
** Defined as: no string of urethane develops when touched.
*** The use of catalyst will increase the rate of cure, but will decrease Pot Life.
Typical Mixing Ratio
Prepolymer (A) Curing Agent (B)
Code Number: MGA-036 BNA-005
Specific Gravity: 1.096 1.017
Equivalent Weight: 358 45
Stoichiometry: 1.00 0.95
NCO/OH Index: 1.05 1.00
Weight Pph: 89.3 10.7
Weight Ratio: 1.000 0.119
Weight Ratio: 8.374 1.000
Volume Pph: 88.6 11.4
Volume Ratio: 1.000 0.129
Volume Ratio: 7.771 1.000
The actual mixing ratio at the operation may need to be adjusted based on the actual stoichiometric ratio calculation. For machine mixing, calibration of the metering system is recommended before the new batch of raw material is used.
Northstar Polymers, LLC
3444 Dight Avenue South
Minneapolis, MN 55406
Tel: 612.721.2911
Fax: 612.721.1009
E-Mail: info@northstarpolymers.com
Notice: All of the statements, recommendations, suggestions, and data concerning the subject material are based on our laboratory results, and although we believe the same to be reliable, we expressly do not represent, warrant, or guarantee the accuracy, completeness, or reliability of same, or the material or the results to be obtained from the use thereof, neither do we warrant that any such use, either alone or in combination with other materials, shall be free of the rightful claim of any third party by way of INFRINGEMENT or the like, and NORTHSTAR POLYMERS DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, OF MERCHANTABILITY and FITNESS FOR A PARTICULAR PURPOSE.